tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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permissions-policy-private-state-token-issuance.html (809B)

      1 <!DOCTYPE html>
      2 <script>
      3 'use strict';
      4 
      5 window.onload = function() {
      6  // Check issuance operation availability for both Request and XMLHttpRequest.
      7  // They are tied to the same permission policy. They should be both enabled or disabled.
      8  let num_enabled = 2;
      9  try {
     10    const issue_request = new Request("https://issuer.example/", {
     11      privateToken: {
     12        version: 1,
     13        operation: "token-request"
     14      }
     15    });
     16  } catch (e) {
     17    num_enabled--;
     18  }
     19 
     20  try {
     21    const xhr = new XMLHttpRequest();
     22    xhr.open("GET", "https://issuer.example/");
     23    xhr.setPrivateToken({
     24      version: 1,
     25      operation: "token-request"
     26    });
     27  } catch (e) {
     28    num_enabled--;
     29  }
     30  parent.postMessage({
     31    type: 'availability-result',
     32    num_operations_enabled: num_enabled,
     33  }, '*');
     34 }
     35 </script>